vibration in the gas pedal HELP!!!!? OK , it just started yesterday, its a whine noise from behind the steering wheel, not there in park, only reverse and drive, i feel a definite low and steady vibration in the accelerator pedal. it shifts great no hesitation still moderately great acceleration. ive had tons of tire work done, its not coming from the tires. cant find the definite root of the noise but when i opened my hood, it was at the far rear right by the hood hinge. power steering maybe? i know less than nothing about these things. hep me please! fyi its a 97 chevy blazer, rear wheel drive not 4wd. auto trans. 133,000 mi.